jhbruhn / ambika-smr4-multimode Goto Github PK

ISP port and C35 are really close to each others. I can connect my programmer but it pushes a bit the capacitor on the side.

Hi there, I have done a run of the voice card at JLCPCB with SMT assembly for most of the components, and I have some weird issues.

Right now the voicecard is connected with dupont cables to the motherboard and it is running (I get NICE sound out of it), but the 4052D is getting really hot when I change the filter mode (e.g. from BP to HP, but it can from any other direction) and the audio stop. I have to unplug and replug the -8V supply voltage to get it running again. I have the same issue with 3 voice cards I tested so far.

For the 4052D I selected one from NEXPERIA (SKU= C11350) I think the qualiy should be fine. I have more doubts about the 2N7002 from Changjiang (https://lcsc.com/product-detail/MOSFET_Changjiang-Electronics-Tech-CJ-2N7002_C8545.html).

Any idea? Should I change one the IC or transistor mentionned above? Or any other components to focus on?

Thx